CN-122008794-A - Control method and device for thermal management system and vehicle

CN122008794ACN 122008794 ACN122008794 ACN 122008794ACN-122008794-A

Abstract

The application discloses a control method, a device and a vehicle of a thermal management system, which relate to the technical field of thermal management of new energy automobiles and comprise the steps of determining a heat pump working mode according to the thermal management requirements of each system of the current vehicle, determining available heat sources based on the heat pump working mode, determining a target angle of a valve core of a nine-way valve and a three-way valve opening position preset in a waterway of the thermal management system based on the available heat sources, determining a control strategy of the thermal management system according to the target angle of the valve core of the nine-way valve and the three-way valve opening position, and controlling the thermal management system through the control strategy and a preset closed-loop control algorithm.

Inventors

CHE QIANG
LI XIAOHANG
QI JI
Sun Jueyuan
LIU DONG
DONG XIANGLI
SUN JIANTAO

Assignees

一汽奔腾汽车股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260331

Claims (10)

1. A thermal management system control method, the thermal management system control method comprising: Determining a heat pump working mode according to the thermal management requirements of each system operation of the current vehicle; Determining an available heat source based on the heat pump working mode, and determining a target angle of a valve core of a nine-way valve and an opening position of a three-way valve which are preset in a waterway of a thermal management system based on the available heat source; Determining a control strategy of the thermal management system according to the target valve core angle of the nine-way valve and the opening position of the three-way valve; And controlling the thermal management system through the control strategy and a predetermined closed-loop control algorithm.
2. The method of claim 1, wherein said controlling said thermal management system via said control strategy and a predetermined closed loop control algorithm comprises: according to the control strategy, controlling each component of the thermal management system to operate according to a specified working state, and entering a stable control stage of the heat pump working mode; And adopting the closed-loop control algorithm to maintain the working states of all the components in the stable control stage and control the thermal management system.
3. The method of claim 1, wherein determining the heat pump operating mode based on the current thermal management requirements for each system operation of the vehicle comprises: Responding to the starting of the vehicle, collecting signals of each temperature sensor in real time, and determining the thermal management requirement of the operation of each system of the current vehicle through the signals of the temperature sensors; Determining a combination situation of the thermal management requirements according to the thermal management requirements; and determining the heat pump working mode according to the combination condition.
4. The thermal management system control method of claim 3, wherein the thermal management requirements include a passenger compartment thermal management requirement set by a user and a vehicle component temperature control thermal management requirement; the passenger cabin thermal management requirements are determined based on the energy of heat exchange between the environment and the air in the vehicle, the incident energy of sunlight, the energy emitted by a human body and the energy emitted by the work of parts in the vehicle; the vehicle component temperature control thermal management needs are determined based on set respective temperature thresholds for each vehicle component.
5. The method for controlling a thermal management system of claim 4, characterized in that the method further comprises: according to the passenger cabin thermal management requirements, calculating the air output and the air output temperature of the passenger cabin air conditioning system; determining a response mode and a circulation mode of the passenger cabin air conditioning system and steady state energy required by the passenger cabin to enter a steady state based on the air output volume and the air output temperature; Calculating the transient energy of the current vehicle; superposing the steady-state energy and the transient energy in the determined response mode and the circulation mode of the air conditioning system to determine the conditioning energy required to be provided by the passenger cabin air conditioning system; and determining control parameters of the passenger cabin air conditioning system according to the adjustment energy.
6. The method of claim 1, wherein determining a control strategy for the thermal management system based on the nine-way valve spool target angle and the three-way valve opening position comprises: determining the working states of other components of the thermal management system according to the temperature thresholds corresponding to the other components of the thermal management system; And determining a control strategy of the thermal management system according to the working state, the target valve core angle of the nine-way valve and the opening position of the three-way valve.
7. The thermal management system control method according to claim 1 or 2, wherein after the control of the thermal management system, the method further comprises: Determining the switched heat pump working mode in response to switching the heat pump working mode; comparing the current heat pump working mode with the working states of all the components of the switched heat pump working mode, and determining a corresponding switching management strategy; And according to the switching management strategy, switching the working mode of the heat pump is completed.
8. The thermal management system control method according to claim 1 or 2, wherein after the control of the thermal management system, the method further comprises: and controlling the thermal management system to enter a safety protection mode in response to the occurrence of an abnormality of the thermal management system.
9. A thermal management system control apparatus, the thermal management system control apparatus comprising: The working mode determining module is used for determining a heat pump working mode according to the thermal management requirements of each system operation of the current vehicle; The water valve determining module is used for determining available heat sources based on the heat pump working mode and determining a target angle of a valve core of a nine-way valve and the opening position of a three-way valve which are preset in a waterway of the heat management system based on the available heat sources; The control strategy determining module is used for determining a control strategy of the thermal management system according to the target valve core angle of the nine-way valve and the opening position of the three-way valve; And the control thermal management system module is used for controlling the thermal management system through the control strategy and a predetermined closed-loop control algorithm.
10. A vehicle, characterized by comprising: Electronic device for implementing the steps of the thermal management system control method according to any one of claims 1 to 8; A processor that runs a program, the data output from the electronic device when the program runs performing the steps of the thermal management system control method according to any one of claims 1 to 8; a storage medium storing a program that, when executed, performs the steps of the thermal management system control method according to any one of claims 1 to 8 on data output from an electronic device.

Description

Control method and device for thermal management system and vehicle Technical Field The application relates to the technical field of heat management of new energy automobiles, in particular to a control method of a heat management system, a control device of the heat management system and a vehicle. Background With the rapid development of new energy automobiles, a vehicle thermal management system is required to simultaneously meet the comfort of a passenger cabin air conditioner and the temperature control requirements of power batteries, electric driving and electric control components. At present, heat pump air conditioners are generally adopted for heat management of pure electric vehicles, but most of the pure electric vehicles are wind source heat pump systems which utilize ambient air for heat exchange, and research and application of the water source heat pump which utilizes a liquid cooling loop for heat exchange are relatively few. In a general electric vehicle thermal management system, each subsystem such as water cooling, battery heating, passenger cabin air conditioning and the like is often controlled by a plurality of independent loops and valves. However, the thermal management strategy is generally that each subsystem controls each subsystem, so that it is difficult to dynamically coordinate a plurality of heat sources under different environments and working conditions, and the working modes supported by thermal management are limited, so that fine division cannot be performed on complex scenes, and therefore when multiple demands are overlapped (for example, an air conditioner is started while a battery is charged quickly), the control logic is complex, the response is not timely, unreasonable energy distribution or system fluctuation may occur, and it is difficult to simultaneously meet the thermal management demands of a plurality of systems of the whole vehicle and achieve low energy consumption. Disclosure of Invention The invention aims to provide a control method of a thermal management system, a control device of the thermal management system, electronic equipment, a storage medium and a vehicle, at least solving the problem of how to coordinate a plurality of heat sources, and solving one technical problem of how to meet the thermal management requirements of a plurality of systems of the whole vehicle and also solving the problem of low energy consumption. The invention provides the following scheme: according to one aspect of the present invention, there is provided a thermal management system control method including: Determining a heat pump working mode according to the thermal management requirements of each system operation of the current vehicle; Determining an available heat source based on the heat pump working mode, and determining a target angle of a valve core of a nine-way valve and an opening position of a three-way valve which are preset in a waterway of a thermal management system based on the available heat source; Determining a control strategy of the thermal management system according to the target valve core angle of the nine-way valve and the opening position of the three-way valve; And controlling the thermal management system through the control strategy and a predetermined closed-loop control algorithm. Further, the controlling the thermal management system through the control strategy and a predetermined closed-loop control algorithm includes: according to the control strategy, controlling each component of the thermal management system to operate according to a specified working state, and entering a stable control stage of the heat pump working mode; And adopting the closed-loop control algorithm to maintain the working states of all the components in the stable control stage and control the thermal management system. Further, the determining the heat pump working mode according to the thermal management requirements of each system operation of the current vehicle includes: Responding to the starting of the vehicle, collecting signals of each temperature sensor in real time, and determining the thermal management requirement of the operation of each system of the current vehicle through the signals of the temperature sensors; Determining a combination situation of the thermal management requirements according to the thermal management requirements; and determining the heat pump working mode according to the combination condition. Further, the thermal management requirements include a passenger compartment thermal management requirement set by a user and a vehicle component temperature control thermal management requirement; the passenger cabin thermal management requirements are determined based on the energy of heat exchange between the environment and the air in the vehicle, the incident energy of sunlight, the energy emitted by a human body and the energy emitted by the work of parts in the vehicle; the vehicle component temperature control therma